class Person{
    constructor(_name , _age){
        this.name = _name ;
        this.age = _age ;
    }
    introduce(){
        return `My name is ${this.name}. I am ${this.age} years old.` ;
    }
}
module.exports = Person ;
// let p1 = new Person('Tom',21);

// console.log(p1.introduce(),p1.age,p1.name);